Results 31 to 40 of about 1,541,061 (327)

Enantioselective protonation [PDF]

Nature Chemistry, 2009
Enantioselective protonation is a common process in biosynthetic sequences. The decarboxylase and esterase enzymes that effect this valuable transformation are able to control both the steric environment around the proton acceptor (typically an enolate) and the proton donor (typically a thiol).
Mohr, Justin T., Hong, Allen Y., Stoltz, Brian M.   +2 more
openaire   +3 more sources

Monitoring of breathing motion in image-guided PBS proton therapy: comparative analysis of optical and electromagnetic technologies

Radiation Oncology, 2017
Background Motion monitoring is essential when treating non-static tumours with pencil beam scanned protons. 4D medical imaging typically relies on the detected body surface displacement, considered as a surrogate of the patient's anatomical changes, a ...
Giovanni Fattori, Sairos Safai, Pablo Fernández Carmona, Marta Peroni, Rosalind Perrin, Damien Charles Weber, Antony John Lomax   +6 more
doaj   +1 more source

Exploring the experience of meaning-centered group psychotherapy among Chinese cancer patients during active treatment: a descriptive qualitative study

Frontiers in Psychiatry, 2023
ObjectiveMeaninglessness poses a significant psychological challenge for cancer patients, negatively affecting their quality of life and increasing the risk of suicide.
Shuman Wang, Shuman Wang, Shuman Wang, Mimi Zheng, Mimi Zheng, Mimi Zheng, Yu Zhu, Yu Zhu, Yu Zhu, Lijuan Zhang, Lijuan Zhang, Lijuan Zhang, Xiaoru Li, Xiaoru Li, Xiaoru Li, Hongwei Wan, Hongwei Wan, Hongwei Wan   +17 more
doaj   +1 more source

Leaf open time sinogram (LOTS): a novel approach for patient specific quality assurance of total marrow irradiation

Radiation Oncology, 2020
There is no ideal detector-phantom combination to perform patient specific quality assurance (PSQA) for Total Marrow (TMI) and Lymphoid (TMLI) Irradiation plan.
Rajesh Thiyagarajan, Dayananda Shamurailatpam Sharma, Suryakant Kaushik, Mayur Sawant, K. Ganapathy, N. Arunai Nambi Raj, Srinivas Chilukuri, Sham C. Sundar, Kartikeswar Ch. Patro, Arjunan Manikandan, M. P. Noufal, Rangasamy Sivaraman, Jose Easow, Rakesh Jalali   +13 more
doaj   +1 more source

Pair Production of the Lightest Chargino via Gluon-Gluon Collisions [PDF]

, 1999
The production of the lightest chargino pair from gluon-gluon fusion is studied in the minimal supersymmetric model(MSSM) at proton-proton colliders. We find that with the chosen parameters, the production rate of the subprocess can be over 2.7 femto ...
A. Salam, A.D. Martin, Bernd A. Kniehl, C.X. Chang, Du Fei, F. Englert, G. Altareli, G. Passarino, G.S. Guralnik, H. Haber, H.D. Politzer, H.E. Haber, Han Liang, I. Bigi, J. Ellis, J.F. Gunion, J.R. Espinosa, Jiang Yi, Jiang Yi, Jiang Yi, K. Abbiendi, K. Gunion, K. Gunion, M. Acciarri, M. Carena, M. Drees, M.A. Diaz, M.L. Zhou, Ma Wen-Gan, P. Abreu, P. Abreu, P.W. Higgs, P.W. Higgs, P.W. Higgs, R. Barate, S. Dimopoulos, S. Kiyoura, S. Weinberg, S.L. Glashow, S.Y. Choi, T. Ibrahim, T. Ibrahim, T.W.B. Kibble, W. Beenakker, Zhou Hong, Zhou Mian-Lai   +45 more
core   +2 more sources

Successful treatment with proton beam therapy for a solitary sternal metastasis of breast cancer: a case report

Journal of Medical Case Reports, 2022
Background Breast cancer infrequently metastasizes to the sternum as solitary metastasis. We experienced successful treatment with proton beam therapy for a case of sternal metastasis of breast cancer.
Yojiro Ishikawa, Motohisa Suzuki, Hisashi Yamaguchi, Ichiro Seto, Masanori Machida, Yoshiaki Takagawa, Keiichi Jingu, Yasuyuki Kikuchi, Masao Murakami   +8 more
doaj   +1 more source

Assessment of a Therapeutic X-ray Radiation Dose Measurement System Based on a Flexible Copper Indium Gallium Selenide Solar Cell

Sensors, 2022
Several detectors have been developed to measure radiation doses during radiotherapy. However, most detectors are not flexible. Consequently, the airgaps between the patient surface and detector could reduce the measurement accuracy.
Dong-Seok Shin, Tae-Ho Kim, Jeong-Eun Rah, Dohyeon Kim, Hye Jeong Yang, Se Byeong Lee, Young Kyung Lim, Jonghwi Jeong, Haksoo Kim, Dongho Shin, Jaeman Son   +10 more
doaj   +1 more source

(Anti)Proton and Pion Source Sizes and Phase Space Densities in Heavy Ion Collisions [PDF]

, 2001
NA44 has measured mid-rapidity deuteron spectra from AA collisions at sqrt{s}=18GeV/A at the CERN SPS. Combining these spectra with published proton, antiproton and antideuteron data allows us to calculate, within a coalescence framework, proton and ...
A. Hansen, A. Polleri, A. Ukawa, A. Z. Mekjian, A. Z. Mekjian, B. V. Jacak, B. V. Jacak, Barbara Holzer, D. Ferenc, G. Ambrosini, G. F. Bertsch, G. F. Bertsch, H. Appelshäuser, H. Beker, H. Bøggild, H. Bøggild, H. Bøggild, H. Gutbrod, H. Sorge, H. Sorge, I. G. Bearden, I. G. Bearden, I. G. Bearden, I. G. Bearden, I. G. Bearden, J. Barrette, J. Barrette, J. Kapusta, J. W. Cronin, K. Kaimi, L. Ahle, L. Ahle, M. J. Bennett, M. Murray, Michael Murray, P. Avery, P. Braun-Munzinger, P.E. Hodgson, R. A. Solz, R. Scheibl, S. Butler, S. Chapman, S. Chapman, S. Mrówczyński, S. Mrówczyński, S. Nagamiya, T. A. Armstrong, T. A. Armstrong, T. A. Armstrong, T. Alber, T. Csörgö, T. Csörgö, U. A. Weidemann, U. Heinz, W. J. Llope, Y. M. Sinukov   +55 more
core   +3 more sources

Proton Cumulants and Correlation Functions in Au + Au Collisions at $\sqrt{s_\mathrm{NN}}$=7.7-200 GeV from UrQMD Model

, 2017
We studied the acceptance dependence of proton cumulants (up to fourth order) and correlation functions in 0--5\% most central Au+Au collisions at $\sqrt{s_\text{NN}}$=7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV from UrQMD model.
He, Shu, Luo, Xiaofeng
core   +2 more sources

Constituent quark model for nuclear stopping in high energy nuclear collisions [PDF]

, 1996
We study the nuclear stopping in high energy nuclear collisions using the constituent quark model. It is assumed that wounded nucleons with different number of interacted quarks hadronize in different ways.
Choi, T. K., Maruyama, M., Takagi, F.
core   +3 more sources